RIKEN：开发出高分辨率便携式 NMR：无需液氦
-先进的高温超导块状磁铁-
理研
JEOL共振
日本井村
联合研究小组正在研究高温超导块状磁铁的复杂性。
磁场均匀度甚至高于MRI，
保持 200 MHz (4.7 T) 的高分辨率，
我们已成功开发出一种新型核磁共振。
此外，磁化的高温超导块状磁铁在冰箱中冷却。
产生磁场
即使核磁共振被运输或搬迁
确认磁铁性能没有变化。
高分辨率紧凑型核磁共振：
“在办公桌上便携式使用，这是传统机器无法实现的”成为可能。
还，
“无需液氦”，规避氦气资源风险。
主要研究：
它是在“第34届国际超导研讨会（ISS2021）”（11月30日举行）上宣布的。
理研
https://www.riken.jp/pr/news/2021/20211208_1/
Development of a superconducting bulk magnet for NMR and MRI
Abstract
A superconducting bulk magnet composed of six vertically stacked annular single-domain c-axis-oriented Eu-Ba-Cu-O crystals
was energized to 4.74 T using a conventional superconducting magnet for high-resolution NMR spectroscopy.
Shim coils, gradient coils, and radio frequency coils for high resolution NMR and MRI
were installed in the 23 mm-diameter room-temperature bore of the bulk magnet.
A 6.9 ppm peak-to-peak homogeneous region suitable for MRI
was achieved in the central cylindrical region (6.2 mm diameter, 9.1 mm length) of the bulk magnet by using a single layer shim coil.
A 21 Hz spectral resolution
that can be used for high resolution NMR spectroscopywas obtained in the central cylindrical region (1.3 mm diameter, 4 mm length) of the bulk magnet by using a multichannel shim coil.
A clear 3D MR image dataset of a chemically fixed mouse fetus with (50 μm)(3) voxel resolution was obtained in 5.5 h.
We therefore
concluded that the cryogen-free superconducting bulk magnet developed in this study is useful for high-resolution desktop NMR, MRI and mobile NMR device.– PubMed